5-22 Image Optimization
Persistence
Description
Used for adjusting the temporal smooth to optimize the image.
Operation
Rotate the knob under [Persistence] on the touch screen.
The system provides 6 levels of persistence adjustment; 0 represents no persistence.
The bigger the value is, the stronger the effect becomes.
WF (Wall Filter)
Description
It filters out flow noise. The bigger the value, the more the filtered noise. The real-time
value (WF) is displayed in the image parameter area in the right corner of the screen.
Operation
Tap [WF] on the touch screen to adjust the parameters.
Impacts
Flow signals may be missing.
Flow Brightness
Description
Used for adjusting the blood brightness of the grey background.
Operation
Rotate the knob under [Flow Brightness] item on the touch screen.
The adjusting range is 0-100% in increments of 5%.
Impacts
The grey background of the blood flow effect becomes brighter with the value becoming
larger.
The grey background of the blood flow effect becomes darker with the value becoming
smaller.
Colorbar Scale
Description
The maximum velocity of the color map.
Operation
Rotate the knob under [Colorbar Scale] item on the touch screen.
The adjusting range is 50cm/s-100cm/s in increments of 10cm/s.
Impacts
The velocity on the color bar becomes larger with the value becoming larger and the
arrow’s color changing.
The velocity on the color bar becomes smaller with the value becoming smaller and the
arrow’s color changing.
Edge Smooth
Operation
Tap [Edge Smooth] to adjust the parameter.
There are Low, Mid and High values of the spectrum.
Impacts
The blood against the edge becomes smooth with the value being larger.
The blood against the edge becomes tough with the value being smaller.
Arrow Lifetime
Description
Used for adjusting the frame of the arrow.
